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A266824 Number of nX3 arrays containing 3 copies of 0..n-1 with no element 1 greater than its north, west, northwest or southwest neighbor modulo n and the upper left element equal to 0. 0
1, 0, 1, 16, 3335, 2320408, 2535597415, 4417318594838 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,4

COMMENTS

Column 3 of A266825.

LINKS

Table of n, a(n) for n=1..8.

EXAMPLE

Some solutions for n=4

..0..3..2....0..3..2....0..2..1....0..3..2....0..3..2....0..2..1....0..3..1

..3..2..1....0..3..1....3..2..0....3..2..1....0..3..1....3..2..1....0..2..1

..2..1..0....0..2..1....3..1..0....3..1..0....3..2..1....3..2..0....3..2..1

..1..0..3....3..2..1....2..1..3....2..1..0....2..1..0....3..1..0....3..2..0

CROSSREFS

Cf. A266825.

Sequence in context: A051551 A307930 A289703 * A249599 A281821 A003773

Adjacent sequences:  A266821 A266822 A266823 * A266825 A266826 A266827

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 04 2016

STATUS

approved

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Last modified September 19 17:19 EDT 2021. Contains 347564 sequences. (Running on oeis4.)